Navigated abdominal T1-W MRI permits free-breathing image acquisition with less motion artifact
- 12 January 2010
- journal article
- research article
- Published by Springer Science and Business Media LLC in Pediatric Radiology
- Vol. 40 (3), 340-344
- https://doi.org/10.1007/s00247-009-1502-4
Abstract
T1-W imaging of the pediatric abdomen is often limited by respiratory motion artifacts. Although navigation has been commonly employed for coronary MRA and T2-W imaging, navigation for T1-W imaging is less developed. Thus, we incorporated a navigator pulse into a fat-suppressed T1-W SPGR sequence such that steady-state contrast was not disrupted. Ten children were scanned after gadolinium administration three times in immediate succession: breath-hold with no navigation, free-breathing with navigation, and free-breathing without navigation. Motion artifacts were scored for each sequence by two radiologists, showing fewer motion artifacts with navigation compared to free-breathing and greater motion artifacts than with breath-holding. This work demonstrates the feasibility and potential utility of navigation for pediatric abdominal T1-W imaging.Keywords
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